@misc{ enwiki:1227065389, author = "{Wikipedia contributors}", title = "National Association of Secondary School Principals --- {Wikipedia}{,} The Free Encyclopedia", year = "2024", url = "https://en.wikipedia.org/w/index.php?title=National_Association_of_Secondary_School_Principals&oldid=1227065389", note = "[Online; accessed 7-July-2024]" }
url
(\usepackage{url}
somewhere in the preamble), which tends to give much more nicely formatted web addresses, the following may be preferred:
@misc{ enwiki:1227065389, author = "{Wikipedia contributors}", title = "National Association of Secondary School Principals --- {Wikipedia}{,} The Free Encyclopedia", year = "2024", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=National_Association_of_Secondary_School_Principals&oldid=1227065389}", note = "[Online; accessed 7-July-2024]" }